Features:<br />Acoustic guitar piezo pickup and preamp system? sensitive enough to capture sound quickly.<br />Stick the preamp onto the sound hole inside? easy to install and no need to cut a hole.<br />2-band EQ: Bass--add depth and weight to the guitar sound; Treble--add or take away the higher tone.<br />Phase switch for improving bass response at low volume and suppressing feedback at high volume.<br />With volume control knob and low battery LED indicator.<br /><br />Specifications:<br />2-band EQ: Bass? Treble<br />Input Impedance: &gt;2M Ohm<br />Output Impedance: &lt;2K Ohm (20Hz-20KHz)<br />Frequency Response: 20Hz-20KHz<br />Bass Control Frequency: 80Hz<br />Treble Control Frequency: 10KHz<br />Power Supply: 1 * 9V Battery (not included)<br />Package Size: 19 * 13.5 * 6cm / 7.5 * 5.3 * 2.4in<br />Package Weight: 265g / 9.3oz<br /><br />Note:<br />Battery is not included.<br /><br />Package List:<br />1 * Pickup and Preamp System<br />1 * User Manual (English)<br><img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-riGB.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-ZYHo.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-tg6U.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-dXQG.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-MI4m.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-xEvx.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-KRDY.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-7jvs.jpg" /><br>$$<img src="http://img.tomtop.com/product/xy/2000/2000/p/gu1/I/8/I2448/I2448-1-558c-Btd0.jpg" /><br>